One-　and　two-dimensional　distributed　feedback　cavities　were　constructed　on　free-standing　polymer　membranes　using　spin-coating　and　lift-off　techniques.　Low　threshold　lasing　was　generated　through　feedback　amplification　when　the　290-nm　membrane　device　was　optically　pumped,　which　was　attributed　to　the　strong　confinement　mechanism　provided　by　the　active　waveguide　layer　without　a　substrate.　The　free-standing　membrane　polymer　laser　is　flexible　and　can　be　transplanted.　Single-　and　dual-wavelength　fiber　lasers　were　achieved　by　directly　attaching　the　membrane　polymer　laser　on　the　optical　fiber　end　face.　This　technique　provides　potential　to　fabricate　polymer　lasers　on　surfaces　with　arbitrary　shapes.　(C)　2016　AIP　Publishing　LLC.